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1,140 results for “down feathers”
FIGURE 7 in A review of the feather mite family Gabuciniidae Gaud & Atyeo (Acariformes Astigmata: Pterolichoidea) of Brazil, with descriptions of eleven new species
FIGURE 7. Piciformobia adjuncta sp. nov., male: dorsal (A) and ventral (B) views.
FIGURE 5 in A review of the feather mite family Gabuciniidae Gaud & Atyeo (Acariformes Astigmata: Pterolichoidea) of Brazil, with descriptions of eleven new species
FIGURE 5. Gabucinia neotropica sp. nov., female: dorsal (A) and ventral (B) views.
FIGURE 16 in A review of the feather mite family Gabuciniidae Gaud & Atyeo (Acariformes Astigmata: Pterolichoidea) of Brazil, with descriptions of eleven new species
FIGURE 16. Proaposolenidia plumbea sp. nov., male: dorsal (A) and ventral (B) views.
FIGURE 13 in A review of the feather mite family Gabuciniidae Gaud & Atyeo (Acariformes Astigmata: Pterolichoidea) of Brazil, with descriptions of eleven new species
FIGURE 13. Proaposolenidia bicolor sp. nov., male: dorsal (A) and ventral (B) views.
Feather mercury increases with feeding at higher trophic levels in two species of migrant raptors, Merlin (Falco columbarius) and Sharp-shinned Hawk (Accipiter striatus)
<p>Mercury (Hg) is a toxic heavy metal that, when methylated to form methylmercury (MeHg), bioaccumulates in exposed animals and biomagnifies through food webs. The purpose of this study was to assess Hg concentrations in raptors migrating through the upper Midwestern USA. From 2009-2012, 966 raptors of 11 species were captured at Hawk Ridge, Duluth, MN. Breast feathers were sampled to determine the concentration of total Hg. Mean Hg concentrations ranged from 0.11 – 3.46 μg g<sup>-1</sup> fresh weight across species and were generally higher in raptors that feed on birds in comparison with those that feed on mammals. To evaluate the effect of dietary sources on Hg biomagnification, carbon and nitrogen stable isotope ratios were measured in feathers of the two species with the highest Hg concentrations, Merlin (<i>Falco columbarius</i>) and Sharp-shinned Hawk (<i>Accipiter striatus</i>). Measured δ<sup>13</sup>C values were similar in both species and indicated a primarily terrestrial-derived diet, whereas δ<sup>15</sup>N values suggested that individual Merlin and Sharp-shinned Hawk feeding at higher trophic levels accumulated higher concentrations of Hg. The risk to birds associated with measured levels of feather Hg was evaluated by calculating blood-equivalent values using an established algorithm. Predicted blood values were then compared to heuristic risk categories synthesized across avian orders. This analysis suggested that while some Merlin and Sharp-shinned Hawk were at moderate risk to adverse effects of MeHg, most of the sampled birds were at negligible or low risk.</p>
FIGURE 27 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 27. Trouessartia tigrina sp. n., female. A—dorsal view, B—ventral view.
FIGURE 30 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 30. Trouessartia pensylvanica sp. n., female. A—dorsal view, B—ventral view.
FIGURE 24 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 24. Trouessartia ruticilla sp. n., female. A—dorsal view, B—ventral view.
FIGURE 21 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 21. Trouessartia mniotilta sp. n., female. A—dorsal view, B—ventral view.
FIGURE 26 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 26. Trouessartia tigrina sp. n., male. A—dorsal view, B—ventral view.
FIGURE 20 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 20. Trouessartia mniotilta sp. n., male. A—dorsal view, B—ventral view.
FIGURE 15 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 15. Trouessartia americana sp. n., female. A—dorsal view, B—ventral view.
FIGURE 17 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 17. Trouessartia helmitheros sp. n., male. A—dorsal view, B—ventral view.
FIGURE 12 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 12. Trouessartia seiurus sp. n., female. A—dorsal view, B—ventral view.
FIGURE 11 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 11. Trouessartia seiurus sp. n., male. A—dorsal view, B—ventral view.
FIGURE 29 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 29. Trouessartia pensylvanica sp. n., male. A—dorsal view, B—ventral view.
FIGURE 9 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 9. Trouessartia spizellae sp. n., female. A—dorsal view, B—ventral view.
FIGURE 8 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 8. Trouessartia spizellae sp. n., male. A—dorsal view, B—ventral view.
FIGURE 23 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 23. Trouessartia ruticilla sp. n., male. A—dorsal view, B—ventral view.
FIGURE 5 in Feather mites of the genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Aves: Passeriformes) in Georgia, USA
FIGURE 5. Trouessartia ciris sp. n., male. A—dorsal view, B—ventral view.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.